A steel rod 1 metre long having square cross section is pulled under a tensile l

Question

A steel rod 1 metre long having square cross section is pulled under a tensile load of 8 tonnes. The extension in the rod was 1 mm only. If Esteel = 2 × 106 kg/cm², the side of the rod, is

Options:

A . 1 cm

B . 1.5 cm

C . 2 cm

D . 2.5 cm

Answer: Option C

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